Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5905511 | Ink jet recording apparatus for accurately recording regardless of ambient temperature | Yoshitaka Watanabe, Makoto Aoki, Eiichi Sato | 1999-05-18 |
| 5172142 | Ink jet recording apparatus with driving means providing a driving signal having upper and lower limits in response to an input signal | Yoshitaka Watanabe, Makoto Aoki, Eiichi Sato | 1992-12-15 |
| 4959659 | Color picture forming apparatus and method | Takashi Sasaki, Hideaki Kawamura | 1990-09-25 |
| 4931864 | Image forming apparatus which performs gamma correction on the basis of a cumulative frequency distribution produced from a histogram of image data representing a selected area of an image | Hideaki Kawamura, Takashi Sasaki | 1990-06-05 |
| 4860034 | Ink jet recording apparatus with ambient temperature detecting means for providing a signal to drive control means responsive to a recording-density data signal | Yoshitaka Watanabe, Makoto Aoki, Eiichi Sato | 1989-08-22 |
| 4821056 | Shutter speed display device for a camera | Masaharu Kawamura, Hiroyasu Murakami, Nobuhiki Shinoda, Tadashi Ito | 1989-04-11 |
| 4772911 | Image formation apparatus | Takashi Sasaki, Hideaki Kawamura | 1988-09-20 |
| 4727436 | Method and apparatus for producing a picture | Hideaki Kawamura, Yuichi Sato, Yoshitaka Watanabe | 1988-02-23 |
| 4714935 | Ink-jet head driving circuit | Mitsuru Yamamoto, Yoshitaka Watanabe | 1987-12-22 |
| 4713746 | Method for forming pictures | Yoshitaka Watanabe, Hideaki Kawamura, Yuichi Sato | 1987-12-15 |
| 4713701 | Picture producing apparatus using multiple dot forming units and recording materials of different concentrations | Hideaki Kawamura, Yuichi Sato, Yoshitaka Watanabe | 1987-12-15 |
| 4706132 | Video signal processing system | Makoto Takayama | 1987-11-10 |
| 4682186 | Method for forming a color image | Takashi Sasaki, Hideaki Kawamura | 1987-07-21 |
| 4682216 | Color image picture forming process and apparatus which improves the quality of the black portions of the picture | Takashi Sasaki, Hideaki Kawamura, Jiro Moriyama | 1987-07-21 |
| 4672432 | Method for recording a color image using dots of colorants of different densities | Hideaki Kawamura, Takashi Sasaki | 1987-06-09 |
| 4667228 | Image signal processing apparatus | Hideaki Kawamura, Takashi Sasaki | 1987-05-19 |
| 4664496 | Camera system | Nobuhiko Shinoda, Masaharu Kawamura, Tadashi Ito, Fumio Ito, Hiroyashu Murakami | 1987-05-12 |
| 4658300 | System and method for processing image signals | Hideaki Kawamura, Takashi Sasaki | 1987-04-14 |
| 4658284 | Image forming apparatus | Hideaki Kawamura, Takashi Sasaki | 1987-04-14 |
| 4639747 | Recording head drive control apparatus | Hideaki Kawamura, Takashi Sasaki | 1987-01-27 |
| 4635078 | Intermediate gradient image producing method | Hideaki Kawamura, Takashi Sasaki | 1987-01-06 |
| 4631578 | Method of and apparatus for forming a color picture using a plurality of color correction processings | Takashi Sasaki, Hideaki Kawamura | 1986-12-23 |
| 4604654 | Image forming method and apparatus | Yoshitaka Watanabe, Hideaki Kawamura, Yuichi Sato | 1986-08-05 |
| 4560997 | Method and apparatus for forming a pattern | Yuichi Sato, Hideaki Kawamura, Yoshitaka Watanabe | 1985-12-24 |
| 4512656 | Camera system | Nobuhiko Shinoda, Masaharu Kawamura, Tadashi Ito, Fumio Ito, Hiroyashu Murakami | 1985-04-23 |